package Collection;

import java.util.ArrayList;
import java.util.Collection;

public class CollectionDemo {
    public static void main(String[] args) {
     Collection c=new ArrayList();
     c.add(new Point(1,2));
     c.add(new Point(3,4));
     c.add(new Point(5,6));
     c.add(new Point(7,8));
     c.add(new Point(9,0));
     c.add(new Point(1,2));
        System.out.println(c);

        Point p=new Point(1,2);
        boolean contains= c.contains(p);
        System.out.println(contains);

        c.remove(p);
        System.out.println(c);

        Collection cc=new ArrayList();
        Point pp=new Point(1,2);
        cc.add(pp);
        System.out.println(cc);
        System.out.println(pp);
        pp.setX(10);
        pp.setY(250);
        System.out.println(cc);
        System.out.println(pp);






       /*
        Collection c=new ArrayList();
        c.add("one");
        c.add("two");
        c.add("three");

        System.out.println(c);
        System.out.println(c.size());
        System.out.println(c.isEmpty());

        c.clear();
        System.out.println(c);
        System.out.println(c.size());
        System.out.println(c.isEmpty());

        */
    }
}
